I believe the game could have used more focusing on the main gameplay mechanic - surfing waves. I found it far too difficult to dodge the white birds on the light blue background, and taking damage when not surfing the wave correctly made me restart a lot. The tricks and their animations were a really cool touch, and the floating to the surface after landing a jump was nice :)
I think maybe decreasing the gravity and the jump height could have made the jumps feel better.